Update dependency @rushstack/heft to v1

Author: renovate[bot]

package.json

@@ -21,7 +21,7 @@
   "devDependencies": {
     "@changesets/cli": "^2.31.0",
     "@livekit/changesets-changelog-github": "^0.1.1",
-    "@rushstack/heft": "^0.74.5",
+    "@rushstack/heft": "^1.0.0",
     "@trivago/prettier-plugin-sort-imports": "^6.0.2",
     "@typescript-eslint/eslint-plugin": "^8.60.1",
     "@typescript-eslint/parser": "^8.60.1",